Howdy,
What kind of noise does the turbo make? What you describe sounds like turbo "surge" to me. Loss of boost, power and the turbo makes a strange noise.
If you tune it, most times it will get worse. Have you tried down shifting and getting the rpms up and in turn drive the turbine harder?
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2008 6.4L, CCLB, 4x4, BD tap shifter, Intake, Exhaust and tunes 316,000+ miles.
1997 7.3L, CCLB, 4x4, ZF6, 300/200, twin HPOP, 6.0 IC with 3.5 IC pipes, E-Fuel, HX55 Turbo, 240,000+ miles Tuning by me.
Minotaur user.
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